US7902293B2 - Method of preparing emulsions containing elastomeric silanes and siloxanes having quaternary ammonium groups - Google Patents

Method of preparing emulsions containing elastomeric silanes and siloxanes having quaternary ammonium groups Download PDF

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US7902293B2
US7902293B2 US10/552,204 US55220405A US7902293B2 US 7902293 B2 US7902293 B2 US 7902293B2 US 55220405 A US55220405 A US 55220405A US 7902293 B2 US7902293 B2 US 7902293B2
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quaternary ammonium
siloxanes
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water
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Bethany Johnson
Michael Richard Lafore
Donald Liles
Zuchen Lin
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Dow Silicones Corp
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Dow Corning Corp
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/02—Silicon compounds
    • C07F7/08—Compounds having one or more C—Si linkages
    • C07F7/18—Compounds having one or more C—Si linkages as well as one or more C—O—Si linkages
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A61K8/046—Aerosols; Foams
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A61K8/06—Emulsions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/89—Polysiloxanes
    • A61K8/896—Polysiloxanes containing atoms other than silicon, carbon, oxygen and hydrogen, e.g. dimethicone copolyol phosphate
    • A61K8/898—Polysiloxanes containing atoms other than silicon, carbon, oxygen and hydrogen, e.g. dimethicone copolyol phosphate containing nitrogen, e.g. amodimethicone, trimethyl silyl amodimethicone or dimethicone propyl PG-betaine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/38—Polysiloxanes modified by chemical after-treatment
    • C08G77/382—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon
    • C08G77/388—Polysiloxanes modified by chemical after-treatment containing atoms other than carbon, hydrogen, oxygen or silicon containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/48—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
    • C08G77/54—Nitrogen-containing linkages
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2383/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2383/04—Polysiloxanes

Definitions

  • This invention is directed to a method of making oil-in-water (O/W) emulsions and microemulsions and water-in-oil (W/O) emulsions and microemulsions containing elastomeric silanes or siloxanes having nitrogen atoms, preferably quaternary ammonium groups, as an oil phase.
  • the preferred elastomeric silanes or siloxanes are obtained by reacting organic quaternary ammonium compounds having epoxide or halohydrin groups, with silanes or siloxanes having amino groups; and the reaction is carried out in the presence of a crosslinking agent and a surfactant in an aqueous polar phase.
  • quaternary ammonium functional silanes and quaternary ammonium functional siloxanes have a variety of commercial application in the textile industry and in the personal care arena. They can also be used as anti-microbial agents; in modifying fillers, fibers, and surfaces; as thickening agents; and as a conditioning agent.
  • the quaternary ammonium functional silanes and the quaternary ammonium functional siloxanes it is often necessary to deliver the quaternary ammonium functional silanes and the quaternary ammonium functional siloxanes as an emulsion or microemulsion.
  • an emulsion conventional wisdom dictates that the quaternary ammonium functional silane or quaternary ammonium functional siloxane be combined with a surface active agent and water, and mixed until the emulsion is formed.
  • the process according to the present application differs significantly from the process used in the '753 application, in that quaternary ammonium functional silanes or siloxanes are actually synthesized in an emulsion, using monomers as starting materials which are reacted together to form the quaternary ammonium functional silane or siloxane, rather than using quaternary ammonium functional silanes or siloxanes.
  • the quaternary ammonium functional silanes or siloxanes present in the emulsions according to the present invention are elastomers in contrast to fluids which are formed in the emulsion of the '753 application.
  • This invention relates to methods of making certain oil-in-water (O/W) or water-in-oil (W/O) emulsions and microemulsions containing organosilicon compositions as the oil phase.
  • these emulsions and microemulsions contain elastomeric silanes or siloxanes, preferably having quaternary ammonium groups in their molecule, as the oil phase.
  • the elastomeric silanes or siloxanes having quaternary ammonium groups are obtained by reacting (i) an organic quaternary ammonium compound having epoxide groups or halohydrin groups in its molecule, with (ii) a silane or siloxane having amino groups in its molecule, in the presence of (iii) a crosslinking agent, (iv) a surfactant, dispersed in (v) an aqueous polar phase.
  • quaternary ammonium compounds having epoxide groups and halohydrin groups are glycidyl trimethylammonium chloride, and (3-chloro-2-hydroxypropyl)trimethylammonium chloride, respectively.
  • the aqueous polar phase may be water or a mixture of water and a polar organic compound such as 1,2-hexanediol. These emulsions and microemulsions are useful as treating agents for the hair, skin, and the underarm areas of the human body.
  • the invention is directed to oil-in-water (O/W) and water-in-oil (W/O) emulsions and microemulsions containing elastomeric silanes or siloxanes, preferably having quaternary ammonium groups in their molecule, as the oil phase.
  • the elastomeric silanes or siloxanes having quaternary ammonium groups are obtained by reacting (i) an organic quaternary ammonium compound having epoxide groups or halohydrin groups in its molecule, with (ii) a silane or siloxane having amino groups in its molecule.
  • these materials can be described, for purposes herein, as being silanes or siloxanes having in their molecule at least one unit containing a group such as —R—Z-Q bonded to silicon in which:
  • R is a divalent hydrocarbon group such as ethylene
  • Z is a group such as —N(Q1)-;
  • Q is a group such as —CH(R)CH(OH)YN + (R 1 )(R 2 )(R 3 )X ⁇ ;
  • Q1 is a monovalent hydrocarbon group such as methyl
  • Y is a divalent hydrocarbon group such as ethylene
  • X is a counter ion such as chloride Cl ⁇ ;
  • R 1 -R 3 are monovalent hydrocarbon groups such as methyl.
  • a representative example therefore of at least one particularly preferred —R—Z-Q group is CH 2 CH(OH)CH 2 N + (CH 3 ) 2 (CH 3 )Cl ⁇ .
  • non-terminal halohydrins may also be used, terminal halohydrins such as the compounds described are generally preferred.
  • Combinations of halohydrins may also be employed, as well as combinations of halohydrins and the epoxides noted above.
  • Silanes containing amino groups for use herein generally comprise organosilicon monomers of the type R 3 SiR wherein the R groups in the molecule can consist of alkyl groups containing 1-6 carbon atoms, such as methyl, ethyl, propyl, isopropyl, butyl, and isobutyl; an aryl group such as phenyl; or the R groups can comprise amino groups such as aminoethyl, aminopropyl, aminoisobutyl, aminoethylaminopropyl, and aminoethylaminoisobutyl; provided at least one R group in the silane is an amino group.
  • silanes containing amino groups which are suitable for use herein include aminomethyltrimethylsilane, aminotrimethylsilane, (benzylmethylamino)triethylsilane, diethylaminomethyltrimethylsilane, diethylaminotrimethylsilane, diethylaminotriphenylsilane, diisopropylaminotrimethylsilane, dimethylaminotriethylsilane, dimethylaminotrimethylsilane, phenylmethylbis(dimethylamino)silane, tetrakis(dimethylamino)silane, tri-n-hexylsilylamine, trimethylaminosilane, triphenylaminosilane, tris(dimethylamino)ethylsilane, tris(dimethylamino)methylsilane, and tris(dimethylamino)phenylsilane.
  • siloxanes with amino groups include those siloxane polymers and copolymers having number average molecular weights of 1,000-100,000, especially those having number average molecular weight of 5,000-50,000, such as aminopropyl terminated polydimethylsiloxanes and trimethylsilyl terminated dimethylsiloxane copolymers.
  • the siloxanes should also contain 0.1-2.0 milliequivalents of amino functionality per gram of the siloxane on average, based on amino nitrogen of primary and secondary amino groups present in the siloxane.
  • the amino groups may be present in the siloxane as aminoethyl groups, aminopropyl groups, aminoisobutyl groups, aminoethylaminopropyl groups, or aminoethylaminoisobutyl groups.
  • the crosslinking agent for use herein is an organic epoxide containing at least two epoxy groups, i.e., diepoxide, including compositions such as ethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, glycerine diglycidyl ether, triglycidyl ether, propylene glycol diglycidyl ether, butanediol diglycidyl ether; 1,2,3,4-diepoxybutane; 1,2,4,5-diepoxypentane; 1,2,5,6-diepoxyhexane; 1,2,7,8-diepoxyoctane; 1,3-divinylbenzene diepoxide; 1,4-divinylbenzene diepoxide; 4,4′-isopropylidene diphenol diglycidyl ether, and hydroquinone diglycidyl ether.
  • diepoxide including compositions such
  • polyglycidyl ethers of alkane polyols polyglycidyl ethers of poly(allylene glycols), diepoxy alkanes, diepoxy aralkanes, and polyphenol polyglycidyl ethers, can also be used herein.
  • n is a positive integer determining the molecular weight of the epoxide.
  • an epoxy functional silicone containing at least two epoxy groups instead of an organic epoxide containing at least two epoxy groups, a suitable epoxy functional silicone of the general structure shown below can be used, in which x represents an integer of one or more. If desired, epoxy functional silicones can be used which contain pendant epoxy groups along the silicone polymer chain.
  • Such epoxy functional silicones are well known in the art and available commercially from sources such as the Dow Corning Corporation, Midland, Mich. USA. Typically, such silicones have a viscosity ranging from 1 to about 200 centistoke (mm 2 /s) and weight average molecular weights of about 300-6,000.
  • Chlorohydrins may be used in place of or in conjunction with the epoxides.
  • a chlorohydrin is a compound containing both chloro and hydroxyl radicals, and in some cases, chlorohydrin has been defined as compounds having the chloro and the hydroxy groups on adjacent carbon atoms, i.e.,
  • Chlorohydrins can be converted into epoxides by the action of a base.
  • a base In the presence of the hydroxide ion, a small proportion of the alcohol exists as an alkoxide, which displaces the chloride ion from the adjacent carbon atom to produce a cyclic ether.
  • organic epoxides and epoxy functional silicones containing a single epoxy group can also be included as an optional component in order to control the cross link density and the overall molecular weight of the elastomers.
  • crosslinking agent can also be employed such as hydroxyalkyl acrylates, some examples of which are hydroxyethyl acrylate and hydroxyethyl methacrylate; as well as isocyanates such as hexamethylene diisocyanate.
  • the surfactant may comprise a nonionic surfactant, a cationic surfactant, an anionic surfactant, an amphoteric surfactant, or a mixture of such surfactants. Most preferred however are nonionic surfactants.
  • the nonionic surfactant should be a non-silicon atom containing nonionic emulsifier.
  • alcohol ethoxylates R 4 (OCH 2 CH 2 ) a OH, particularly fatty alcohol ethoxylates.
  • Fatty alcohol ethoxylates typically contain the characteristic group —(OCH 2 CH 2 ) a OH which is attached to fatty hydrocarbon residue R 4 which contains about eight to about twenty carbon atoms, such as lauryl (C 12 ), cetyl (C 16 ) and stearyl (C 18 ). While the value of “a” may range from 1 to about 100, its value is typically in the range of about 12 to about 40.
  • nonionic surfactants are polyoxyethylene (4) lauryl ether, polyoxyethylene (5) lauryl ether, polyoxyethylene (23) lauryl ether, polyoxyethylene (2) cetyl ether, polyoxyethylene (10) cetyl ether, polyoxyethylene (20) cetyl ether, polyoxyethylene (2) stearyl ether, polyoxyethylene (10) stearyl ether, polyoxyethylene (20) stearyl ether, polyoxyethylene (21) stearyl ether, polyoxyethylene (100) stearyl ether, polyoxyethylene (2) oleyl ether, and polyoxyethylene (10) oleyl ether.
  • dialkyldimethyl ammonium salts represented by R′R′′N + (CH 3 ) 2 X ⁇ , where R′ and R′′ are alkyl groups containing 12-30 carbon atoms, or alkyl groups derived from tallow, coconut oil, or soy; and X is halogen.
  • Monoalkyltrimethyl ammonium salts can also be employed, and are represented by R′N + (CH 3 ) 3 X ⁇ where R′ is an alkyl group containing 12-30 carbon atoms, or an alkyl group derived from tallow, coconut oil, or soy; and X is halogen.
  • Some representative quaternary ammonium salts are dodecyltrimethyl ammonium bromide (DTAB), didodecyldimethyl ammonium bromide, dihexadecyldimethyl ammonium chloride, dihexadecyldimethyl ammonium bromide, dioctadecyldimethyl ammonium chloride, dieicosyldimethyl ammonium chloride, didocosyldimethyl ammonium chloride, dicoconutdimethyl ammonium chloride, ditallowdimethyl ammonium chloride, and ditallowdimethyl ammonium bromide.
  • DTAB dodecyltrimethyl ammonium bromide
  • didodecyldimethyl ammonium bromide dihexadecyldimethyl ammonium chloride
  • dihexadecyldimethyl ammonium bromide dioctadecyldimethyl ammonium chloride
  • anionic surfactants which can be used are sulfonic acids and their salt derivatives; alkali metal sulfosuccinates; sulfonated glyceryl esters of fatty acids such as sulfonated monoglycerides of coconut oil acids; salts of sulfonated monovalent alcohol esters such as sodium oleyl isothionate; amides of amino sulfonic acids such as the sodium salt of oleyl methyl tauride; sulfonated products of fatty acid nitriles such as palmitonitrile sulfonate; sulfonated aromatic hydrocarbons such as sodium alpha-naphthalene monosulfonate; condensation products of naphthalene sulfonic acids with formaldehyde; sodium octahydro anthracene sulfonate; alkali metal alkyl sulfates such as sodium lauryl (dodecy
  • Some examples of commercial anionic surfactants useful in this invention include triethanolamine linear alkyl sulfonate sold under the tradename BIO-SOFT N-300 by the Stepan Company, Northfield, Ill.; sulfates sold under the tradename POLYSTEP by the Stepan Company; and sodium n-hexadecyl diphenyloxide disulfonate sold under the tradename DOWFAX 8390 by The Dow Chemical Company, Midland, Mich.
  • Amphoteric surfactants which can also be used generally comprise surfactant compositions such as alkyl betaines, alkylamido betaines, and amine oxides, specific examples of which are known in the art.
  • the aqueous polar phase used in the process is most preferably an aqueous phase consisting of only water, or an aqueous phase containing water and a polar solvent.
  • the polar solvents especially preferred herein are those compounds determined to be cosmetically acceptable non-aqueous polar solvents, among which are monohydroxy alcohols such as ethyl alcohol and isopropyl alcohol; diols and triols such as propylene glycol, 1,2-hexanediol CH 3 (CH 2 ) 3 CH(OH)CH 2 OH, 2-methyl-1,3-propane diol HOCH 2 CH(CH 3 )CH 2 OH, and glycerol; glycerol esters such as glyceryl triacetate (triacetin), glyceryl tripropionate (tripropionin), and glyceryl tributyrate (tributyrin); and polyglycols such as polyethylene glycols and polypropylene glycols among which are PPG-14 butyl ether C 4 H 9 [OCH(CH 3 )CH 2 ] 14 OH.
  • these and other non-aqueous polar solvents are those compounds determined
  • the aqueous polar phase of the emulsion or microemulsion therefore, can consist of water, or a mixture of water and a polar solvent which is preferably a polar organic compound.
  • this component will be present in the composition in an amount to provide the balance of the composition to 100 percent, after taking in account the amounts of the other components used in formulating a suitable composition.
  • this component will comprise 0.1-99.8 percent by weight based on the total weight of the O/W or W/O emulsion or microemulsion composition, preferably 10-95 percent by weight.
  • mixtures of liquids can be used to form this single phase component of the composition, liquids should be miscible and capable of forming an essentially homogeneous mixture.
  • a preservative may be required as an optional component of the composition, and some representative compounds which can be used include formaldehyde, salicylic acid, phenoxyethanol, DMDM hydantoin (1,3-dimethylol-5,5-dimethyl hydantoin), 5-bromo-5-nitro-1,3-dioxane, methyl paraben, propyl paraben, sorbic acid, imidazolidinyl urea sold under the name GERMALL® II by Sutton Laboratories, Chatham, N.J., sodium benzoate, 5-chloro-2-methyl-4-isothiazolin-3-one sold under the name KATHON CG by Rohm & Haas Company, Philadelphia, Pa., and iodopropynl butyl carbamate sold under the name GLYCACIL® L by Lonza Incorporated, Fair Lawn, N.J.
  • a freeze/thaw stabilizer can be included as another optional component of the composition including compounds such as ethylene glycol, propylene glycol, glycerol, trimethylene glycol, and polyoxyethylene ether alcohols such as RENEX 30 sold by ICI Surfactants, Wilmington, Del.
  • a corrosion inhibitor such as an alkanolamine, an inorganic phosphate such as zinc dithiophosphate, an inorganic phosphonate, an inorganic nitrite such as sodium nitrite, a silicate, a siliconate, an alkyl phosphate amine, a succinic anhydride such as dodecenyl succinic anhydride, an amine succinate, or an alkaline earth sulfonate such as sodium sulfonate or calcium sulfonate.
  • a corrosion inhibitor such as an alkanolamine, an inorganic phosphate such as zinc dithiophosphate, an inorganic phosphonate, an inorganic nitrite such as sodium nitrite, a silicate, a siliconate, an alkyl phosphate amine, a succinic anhydride such as dodecenyl succinic anhydride, an amine succinate, or an alkaline earth sulfonate such as sodium
  • An additional optional component which can be used are low molecular weight polysiloxanes such as low molecular weight linear or cyclic volatile methyl siloxanes, or low molecular weight linear and cyclic volatile and non-volatile alkyl and aryl siloxanes. Most preferred, are low molecular weight linear and cyclic volatile methyl siloxanes.
  • compositions according to this invention When O/W or W/O emulsion or microemulsion compositions according to this invention are used in particular product(s) intended for the personal care market, the compositions may be formulated to include one or more alternate components, for example:
  • conditioning agents such as cationic polymers, proteins, natural oils, elastomeric silanes and siloxanes containing nitrogen atoms, hydrocarbons other than waxes, and mixtures thereof;
  • cosurfactants such as betaines, monoalkylalkanolamides, dialkylalkanolamides, amine oxides, amine glycinates, amine propionates, amine sultaines, and mixtures thereof;
  • Products containing alternate components (A) are especially useful as conditioners, products containing (A) and (B) are especially useful as shampoos, and products containing (C) are especially useful as moisturizers.
  • the amount of each of the various components used in preparing emulsions and microemulsions according to the invention, based on the total weight of the composition, is:
  • Emulsions and microemulsions can also be prepared by omitting component (i), i.e., the organic quaternary ammonium compound having epoxide groups or halohydrin groups in its molecule;
  • an optional component is included, it is generally present in an amount of 0.01-0.1 percent by weight of each optional component, i.e., preservative, freeze/thaw stabilizer, or corrosion inhibitor.
  • the reaction can be made to take place by simply mixing all of the components together, and this is the minimum requirement to obtain reaction, i.e., to perform the “reacting” step under the circumstances. However, it is generally preferred to mix all of the reactants together and to heat them.
  • a catalyst is typically not necessary but under some circumstance, an appropriate catalyst may be employed. In this regard, it has been found that in general, tertiary amines do not add readily to epoxides. This can be improved if the reaction mixture is acidified, especially in stoichiometric proportions, or the tertiary amine is pretreated with an acid in order to convert it to its acid salt.
  • the emulsions and microemulsions can be prepared using simple propeller mixers, turbine-type mixers, Brookfield counter-rotating mixers, or homogenizing mixers. No special equipment or processing conditions are generally required.
  • a reaction vessel Into a reaction vessel was placed 200 gram of a trimethylsiloxy terminated amino functional siloxane having a degree of polymerization (DP) of about 300, and containing about 2 mole percent of aminoethyl aminoisobutyl methyl siloxane groups.
  • DP degree of polymerization
  • 30 gram of Tergitol TMN-6 and 30 gram of Tergitol TMN-10 nonionic surfactants were added, and mixed with a mechanical stirrer for a period of ten to fifteen minutes.
  • 40 gram of water and 0.95 gram of glacial acetic acid were then added to the solution, and allowed to mix for thirty minutes.
  • Example 2 illustrates another method which can be used, if desired, for making oil-in-water (O/W) and water-in-oil (W/O) emulsions and microemulsions containing elastomeric silanes or siloxanes having nitrogen atoms as the oil phase of the emulsions or microemulsions. It essentially involves the sequential steps of:
  • Example 1 80 gram of the emulsion of Example 1, i.e., an aqueous emulsion of aminofunctional siloxane partially reacted with glycidyltrimethylammonium chloride, was weighed into a plastic cup. 0.26 gram of 2-hydroxyethylacrylate was added dropwise to the emulsion, the cup was closed, and placed into a Haushild Speedmixer Model TM DAC-150 laboratory mixing device. The contents of the cup were mixed for two cycles of 20 seconds each. The cup was removed from the mixer and allowed to stand undisturbed for four hours, after which 3 gram of the emulsion was poured into a 50 mm plastic Petri dish. The emulsion in the dish was allowed to evaporate at laboratory ambient conditions for 16 hours. An elastomeric film that was insoluble in toluene resulted.
  • Example 1 80 gram of the emulsion of Example 1, i.e., the aqueous emulsion of aminofunctional siloxane partially reacted with glycidyltrimethylammonium chloride, was weighed into a plastic cup. 0.18 gram of hexamethylenediisocyanate was added dropwise to the emulsion. The cup was closed and placed into a Haushild Speedmixer Model TM DAC-150 laboratory mixing device. The contents of the cup were mixed for two cycles of 20 seconds each. The cup was removed from the mixer and allowed to stand undisturbed for one hour, after which 3 gram of the emulsion was poured into a 50 mm plastic Petri dish. The emulsion in the dish was allowed to evaporate at laboratory ambient conditions for 16 hours. An elastomeric film that was insoluble in toluene resulted.
  • a reaction vessel Into a reaction vessel was placed 200 gram of a trimethylsiloxy-terminated amino siloxane having a DP of about 300 and containing about 2 mole percent aminoethyl aminoisobutyl methyl siloxane groups.
  • 30 g of Tergitol TMN-6 and 30 g of Tergitol TMN-10 nonionic surfactants were added, and mixed with a mechanical stirrer for 10-15 minutes.
  • 40 gram of water and 0.37 gram of glacial acetic acid were then added to the solution, and the solution was mixed for thirty minutes.
  • 320 gram of water was quickly added to the solution and the solution was mixed rapidly for one hour. An additional 114 gram of water was added, and the solution was mixed for thirty minutes.
  • the emulsions and microemulsions prepared herein are useful in personal care, for example, in preparing compositions such as antiperspirants and deodorants. They can be used in skin creams, skin care lotions, moisturizers, facial treatments such as acne or wrinkle removers, personal and facial cleansers, bath oils, perfumes, colognes, sachets, sunscreens, pre-shave and after-shave lotions, shaving soaps, and shaving lathers. They can be used in hair shampoos, hair conditioners, hair colorants, hair relaxers, hair sprays, mousses, permanents, depilatories, and cuticle coats.
  • the compositions can be added to make-ups, color cosmetics, foundations, blushes, lipsticks, eyeliners, mascara, oil removers, color cosmetic removers, and powders.
  • the compositions may include oil soluble, polar solvent soluble, and water soluble ingredients such as vitamins.
  • the emulsions and microemulsions are also capable of functioning as carriers for pharmaceuticals, biocides, and other biologically active substances; and such compositions have utility as additives for cellulosic or synthetic nonwoven carrier substrates used in wet-like cleansing wipes such as wet-wipes, tissues, and towels, marketed generally for personal hygiene and household cleaning tasks.

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US10/552,204 2003-05-16 2004-03-25 Method of preparing emulsions containing elastomeric silanes and siloxanes having quaternary ammonium groups Active 2028-02-22 US7902293B2 (en)

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US7794741B2 (en) * 2007-05-30 2010-09-14 Conopco, Inc. Enhanced delivery of certain fragrance components from personal care compositions
US20080299054A1 (en) * 2007-05-30 2008-12-04 Conopco, Inc., D/B/A Unilever Personal care compositions with enhanced fragrance delivery
CN101386678B (zh) * 2007-09-13 2013-03-13 道康宁（上海）有限公司 制备包含具有季铵基团的弹性体聚硅氧烷的有机硅乳液的方法
CN101508779B (zh) * 2009-03-04 2012-01-18 深圳天鼎精细化工制造有限公司 一种阳离子氨基硅油的合成方法
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KR20150086284A (ko) 2012-11-21 2015-07-27 다우 코닝 코포레이션 이중모드 에멀젼을 포함하는 화장품 조성물
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EP1625132A1 (en) 2006-02-15
JP2007508411A (ja) 2007-04-05
DE602004015771D1 (de) 2008-09-25
CN100445290C (zh) 2008-12-24
EP1625132B1 (en) 2008-08-13
KR101094086B1 (ko) 2011-12-15
WO2004104013A1 (en) 2004-12-02
US20060193805A1 (en) 2006-08-31
JP5404998B2 (ja) 2014-02-05
ATE404570T1 (de) 2008-08-15
KR20060009348A (ko) 2006-01-31

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